SERIES CVII AWWA C508 RUBBER FLAPPER CHECK VALVES 2-24

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Juniper Oliver
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1 SERIES CVII AWWA C508 RUBBER FLAPPER CHECK VALVES Dec 2017

Rubber Flapper Check Valves to AWWA C508 SIMPLE ROBUST DESIGN With only a single moving part there are no packings, o-rings, hinges, or other mechanical parts to wear out.

REINFORCED DISC The one piece molded disc features steel and nylon reinforcement in strategically placed areas to ensure years of maintenance free operation.

2 Rubber Flapper Check Valves to AWWA C508 SIMPLE ROBUST DESIGN With only a single moving part there are no packings, o-rings, hinges, or other mechanical parts to wear out. The disc mechanism is backed by a 25 year warranty. REINFORCED DISC The one piece molded disc features steel and nylon reinforcement in strategically placed areas to ensure years of maintenance free operation. The disc mechanism is backed by a 25 year warranty. PAGE 2 NON-CLOGGING DESIGN The Series CVII has a 100% flow area leading to excellent flow characteristics and low headloss. Large unrestricted flow area results in passage of large solids and debris minimizing potential for clogging. THREADED PORT The bottom mount threaded port allows field installation of accessories including backflow actuator, position indicator, and closure cushioning. Port is on the upstream side of valve, allowing removal/ installation of accessories on pump headers without requiring shutdown of the entire system

Rubber Flapper Check Valves to AWWA C508 STAINLESS HARDWARE Valves come standard with Stainless Steel 304 hardware for long service life in buried/submerged and harsh service conditions.

LARGE ACCESS PORT The large top full size access port allows full service, including removal of the disc, without removing the valve from the pipe.

3 Rubber Flapper Check Valves to AWWA C508 STAINLESS HARDWARE Valves come standard with Stainless Steel 304 hardware for long service life in buried/submerged and harsh service conditions. Additional options available for corrosive and extreme exposures. LARGE ACCESS PORT The large top full size access port allows full service, including removal of the disc, without removing the valve from the pipe. FUSION BONDED EPOXY Fusion Bonded Epoxy (FBE) is provided as standard on the interior and exterior of the Series CVII Check Valves. The standard FBE is ANSI/NSF 61 listed. Specialty coatings/linings available on request. PAGE 3 DRIP TIGHT SEATING The disc features a integral molded raised o-ring type seal to provide positive leak free seating at very low pressures all the way to the rated pressure.

Rubber Flapper Check Valves to AWWA C508 The VSI Advantage High Strength Ductile Iron All Series CVII Check Valves come

The higher strength of Ductile Iron compared to Cast Iron allows all valves up to 24 to be rated to a full 250 psi.

Series CVII Check Valves feature a onepiece reinforced molded rubber disc with the flexible portion warranted for 25

The main portion of the disc is reinforced with a steel or iron casting to ensure the high pressure rating of the Series

4 Rubber Flapper Check Valves to AWWA C508 The VSI Advantage High Strength Ductile Iron All Series CVII Check Valves come standard with the far superior Ductile Iron body. The higher strength of Ductile Iron compared to Cast Iron allows all valves up to 24 to be rated to a full 250 psi. Size AWWA C508 Series CVII psi 250psi psi 250psi PAGE 4 Simplicity Leads to Long Life As standard all Series CVII Check Valves feature a onepiece reinforced molded rubber disc with the flexible portion warranted for 25 years. It is availble in many rubber formulations to ensure compatibility with any process. The main portion of the disc is reinforced with a steel or iron casting to ensure the high pressure rating of the Series CVII. The hinge portion is renforced with nylon fiber to ensure long trouble free life. The disc is molded with an integral raised o-ring type seal. The raised seal ensures drip tight sealing at low pressures down to 5 ft of head and lower.

Rubber Flapper Check Valves to AWWA C508 45 35 Performance The Series CVII Check Valve is able to acheive rapid closure through a short stroke of only 35 compaired to the stroke of approxiamtely 90

Easy to Service With only two moving parts the Series CVII can be fully serviceed in the field with simple hand tools and without removing the valve from the system.

5 Rubber Flapper Check Valves to AWWA C Performance The Series CVII Check Valve is able to acheive rapid closure through a short stroke of only 35 compaired to the stroke of approxiamtely 90 for a traditional swing check valve. The resilient nature of the hinge adds an inherient spring to the operating mechanism further speeding closure while keeping pump head resistance to a minimum. Easy to Service With only two moving parts the Series CVII can be fully serviceed in the field with simple hand tools and without removing the valve from the system. The disc/seal can be completely replaced by simply removing the large top cover. The port for backflush override, position indication, and other accessories is on the low pressure upstream side of the valve, allowing servicing of valves in pump headers without the need to shut down the entire pump header. PAGE 5 Underwriters Lab Inc. listed ANSI/NSF 61 Also classified ANSI/NSF 372 <MH60347> Product Certifications The VSI Series CVII Check valve is certified for use in drinking water in accordance with ANSI/ NSF 61 and Certified Lead Free to ANSI/NSF 372. Every valve is designed and tested to AWWA C508. All valves are fully hydraulically tested for seat leakage and body shell pressure.

6 Rubber Flapper Check Valves to AWWA C508 Sample Specification PAGE 6 Resilient Wedge Gate Valves for Waterworks Service 1.1. This specification covers the design, manufacture, and testing of cast resilient flexible check valves 2 inch (75 mm) and larger under service pressure of up to 250 psig (1724 kpa) Resilient flexible check valves shall be of the full flow body type with only a single moving part. 2. GOVERNING STANDARDS 2.1. All resilient flexible check valves shall be in full conformance with the design, manufacturing, and testing standards set forth by the American Water Works Association (AWWA) in Standard ANSI/AWWA C When requested, manufacturer shall provide an Affidavit of Proof of Design Testing in accordance with AWWA When valves are to be used in potable water service they shall be certified to ANSI/NSF 61 for Drinking Water System Components and ANSI/NSF 372 for Low Lead Content by a national third party testing laboratory. 3. CONNECTIONS 3.1. Flanged valves shall conform to all standards of ANSI B16.1, Class 125 or Class Flanged valves lay length shall conform to AWWA C508 Appendix A Full Waterway dimensions. Valves meeting Clear Waterway dimensions or otherwise not fully conforming with the Full Waterway dimensions shall not be accepted. 4. MARKINGS 4.1. Each valve shall be marked with the manufacturer s name, valve size, body material, and pressure rating cast into the body of the valve. Lettering shall be a minimum of 1/2 inch tall and project 1/10 inch from body When requested check valves, except buried or submerged valves, shall be equipped with a tag identifying body and disc material in addition to manufacturer s name, pressure rating, size, date of manufacturer, and date of testing. 5. DESIGN 5.1. The valve body shall be of the full waterway type. The seating surface shall be on a 45 degree angle relative to the pipe centerline. The valve shall have a short opening stroke of 35 degree to minimize disc travel A threaded port shall be supplied on the bottom of the valve to allow for field installation of backflow actuator, closed position indicator, and/or hydraulic cushion when required. The threaded port shall be on the upstream side of the valve seat to allow removal and installation of accessories without removing entire pump header from service Valve shall be equipped with a full size top access port that allows removal of the disc without removing the valve body from the line. The cover shall be domed to allow self flushing over the disc for valves operating in high solids content The disc shall be of a one piece construction molded with an integral o-ring type sealing surface on its face. It shall be reinforced with alloy steel and nylon to provide service free life. The flex portion of the disc with nylon reinforcement shall be warranted for twenty-five years A proof of design test to 1,000,000 cycles shall have been preformed in accordance with AWWA C Valves shall provide a bubble-tight shutoff at rated working pressure. 6. MATERIALS 6.1. The valve body and cover shall be constructed of ASTM A536 Ductile Iron The disc shall be molded EPDM or NBR as specified utilizing alloy steel and nylon reinforcement. The disc should be fully encapsulated with no voids and holiday tested before and after vulcanization All coatings shall conform to AWWA C550, ANSI/NSF 61, be holiday free, and have a minimum total dry film thickness of 10 mils. 7. OPTIONS 7.1. A screw type backflow actuator shall be supplied where specified to allow opening of the valve during no-flow conditions. The backflow actuator shall be fabricated of stainless steel, bronze, and with seals matching the disc material where required A mechanical position indicator shall be supplied where specified to provide positive closure indication. The indicator shall no impose any opening friction or spring force restrictions on the valve disc Where required a pre-wired limit switch shall be provided to provide closed position indication to a remote location. The switch shall be rated NEMA 4 or suitable rating for the required environment. 8. MANUFACTURER 8.1. Resilient flexible check valves shall be VSI Series CVII as manufactured by Valve Solutions, Inc., Alpharetta, GA USA All valves shall be warranted by manufacturer for a minimum of 12 months.

7 Rubber Flapper Check Valves to AWWA C508 Design Standards Size Range 2-24 Flanged End Construction AWWA C508 Coatings AWWA C550* NSF 61 Compliant Connections ANSI B16.1 Class 125/ANSI B16.5 Class 150* ANSI B16.1 Class 250/ANSI B16.5 Class 300 Lay Length AWWA C508 Appendix A Full Waterway Available as: Underwriters Lab Inc. listed ANSI/NSF 61 Also classified ANSI/NSF 372 <MH60347> *Standard Option PAGE 7 Resistance Guide Designation Common Names Composition EPDM EPDM, EPM Ethylene-propylene-diene Monomer Min/Max Temperature Range -40F/250F General Properties Resistant to: Attached by: Excellent ozone, chemical, and aging resistance. Poor resistance to petroleum-based fluids Animal and vegetable oils, ozone, strong and oxidizing chemicals. Mineral oils and solvents, aromatic hydrocarbons NBR NBR, Buna-N Nitrile-butadiene -30F/225F Excellent resistance to petroleum-based fluids. Good physical properties Many hydrocarbons, fats, oils, greases, hydraulic fluids, chemicals Ozone, ketones, esters, aldehydes, chlorinated and nitro hydrocarbons FPM FPM, Viton Hexaflouroproplyene-vinylidene fluoride -10F/400F Excellent oil and air resistances both at low and high temperatures. Very good chemical resistance All aliphatic, aromatic, and halogenated hydrocarbons, acids, animal and vegetable oils Ketones, low molecular weight esters and nitro containing compounds PTFE PTFE, Teflon Polytetrafluoro-ethylene -100F/450F Excellent abrasion resistance and chemically inert Acids, harsh inorganic and organic chemicals, oils, oxidizing agents, and solvents Molten alkali metals and fluorine at high temperatures

8 Rubber Flapper Check Valves to AWWA C508 Pressure/Temperature Ratings 400 TEMPERATURE, C NPS 2-12 (CL 250) PAGE 8 PRESSURE RATING - PSIG - LIQUID, GAS, STEAM NPS 2-24 (CL 150) NPS (CL 250) NBR EPDM SATURATED STEAM PTFE PRESSURE RATING - BAR TEMPERATURE, F In determining field pressure ratings for Series CVII Check Valves that are constructed of Ductile Iron the above chart should be used. Pressure cast on valve represents maximum seating pressure; maximum hydrostatic pressure is temperature dependent, and may be higher than nominal pressure rating.

9 Rubber Flapper Check Valves to AWWA C508 Flow Characteristics CUBIC METERS PER HOUR ,000 2,000 3,000 4,000 5,000 8,000 7,000 6,000 10, HEAD LOSS IN FEET OF WATER FEET/SECOND VELOCITY BEST VALVE SIZING RANGE 9 FEET/SECOND VELOCITY 4 FEET/SECOND VELOCITY METERS OF WATER PAGE FLOW IN GALLONS PER MINUTE 1,000 2,000 3,000 4,000 6,000 5,000 8,000 7,000 10,000 20,000 30,000 40,000 Size Cv

10 Rubber Flapper Check Valves to AWWA C508 Materials of Construction PAGE Item Description Materials Available Standard 1 Body Ductile Iron* ASTM A Stainless Steel 304 Stainless Steel 316 ASTM A351 CF8 ASTM A351 CF8M 2 Plug Stainless 304* Stainless Seal PTFE 4 Disc (w/reinforcement) EPDM* Buna-N (NBR) Viton (FPM) 5 Cover Seal Same as Disc 6 Cover Same as Body Stainless 304* ASTM F593/594 7 Bolts Stainless 316 ASTM F593/594 Plated Steel ASTM A325 Type 1 Bronze C651 8 Washers Same as Bolts Stainless 304* 9 Plug 1 Stainless Seal 1 PTFE *Standard Material 1) 14 and larger only Additional material options available as special order.

11 Rubber Flapper Check Valves to AWWA C508 Flange with No Accessories F D - øe H G øa øb øc PAGE 11 A B C D E F G H WEIGHT 2" 4 3/ /4 4 1/8 5/ /2" 5 1/ /4 4 1/2 11/16 8 1/2 44 3" 6 7 1/2 4 3/4 4 15/16 3/4 9 1/2 51 4" 7 1/ /4 5 5/16 15/ /2 79 5" 8 1/ /8 6 5/16 15/ " 9 1/ /8 7 3/ " 11 3/4 13 1/2 8 7/8 8 13/16 1 1/8 19 1/ " 14 1/ /16 1 3/ / " /16 1 1/4 27 1/ " 18 3/ /8 14 1/8 1 3/ " 21 1/4 23 1/ /8 16 1/4 1 7/ " 22 3/ / /16 1 9/ " / /4 21 5/8 1 11/ " 29 1/ /8 26 7/ / Flange dimensions to ANSI/ASME B16.1 Class 125

12 Rubber Flapper Check Valves to AWWA C508 Flange with No Accessories F D - øe J I H G øa øb øc PAGE 12 A B C D E F G H I J WEIGHT 2" 4 3/ /4 4 1/8 5/ /2" 5 1/ /4 4 1/2 11/16 8 1/ " 6 7 1/2 4 3/4 4 15/16 3/4 9 1/ " 7 1/ /4 5 5/16 15/ /2 3 1/ " 8 1/ /8 6 5/16 15/ / " 9 1/ /8 7 3/ / " 11 3/4 13 1/2 8 7/8 8 13/16 1 1/8 19 1/2 4 1/ " 14 1/ /16 1 3/ /2 5 1/ " /16 1 1/4 27 1/2 5 1/ " 18 3/ /8 14 1/8 1 3/ / " 21 1/4 23 1/ /8 16 1/4 1 7/ / " 22 3/ / /16 1 9/ / " / /4 21 5/8 1 11/ " 29 1/ /8 26 7/ / Flange dimensions to ANSI/ASME B16.1 Class 125

13 Rubber Flapper Check Valves to AWWA C508 PART NUMBER MATRIX CVII - - / - MODEL IDENTIFIER SIZE CODE ACCESSORIES --No Accessories* B-Backflush Attachment I-Closed Indicator BI-Backflush & Indictor C-Cushion CONNECTION F -Flanged CL125/150* 2 -Flanged CL250/300 COATINGS 1-Fusion-Bonded Epoxy* 2-Tnemec N140, ANSI/NSF 61 BODY MATERIAL D-Ductile Iron* S-CF8 3-CF8M DISC ENCAPSULATION E-EPDM* B-Buna-N (NBR) V-Viton (FKM) HARDWARE S-Stainless Steel 304* 3-Stainless Steel 316 Z-Zinc Plated Steel B-Bronze PAGE 13 * Standard Material EXAMPLE: CVII06F-DE-S1/-- A 6 flanged check valve with Ductile Iron body, reinforced EPDM disc, SS304 hardware, fusion-bonded epoxy coatings with no accessories

LLC tel: 1 (770) 740 0800 fax: 1 (770) 740

14 LLC tel: 1 (770) fax: 1 (770) sales@vsiwaterworks.com As part of a process of on-going product development, VSI reserves the right to amend or change specifications without prior notice. Published data may be subject to change. For the latest version, visit our website at

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